[SCES_524.24] [SLUS_208.51] Ace Combat: Squadron Leader does not have BGM in the briefing

[J013k]

Ace Combat: Squadron Leader (SCES_524.24) \ Ace Combat 5 - The Unsung War (SLUS_208.51) does not have music in the briefing.
No compatibility modes help.

Console model
SCPH-77004 | SCPH-70004

Tested with NHDDL v1.1.0 + Neutrino -20241206-30508edb.

Additionally the same thing is with OPL:
ps2homebrew/Open-PS2-Loader#966.

In which device(s) have you experienced this issue?

• USB

Ace Combat: Squadron Leader:
http://redump.org/disc/4243/.
Ace Combat 5: The Unsung War:
http://redump.org/disc/3442/.

The way to reproduce the issue:
CAMPAIGN -> NEW GAME -> NORMAL-> NORMAL -> Skip 2 FMV by pressing Start -> The briefing should start without music.

How it should look like:
Launch this game with OPL r726, 0.9.2 or lower.

[rickgaiser]

(oops, deleted, wrong issue)

[mirrorbender]

I would like to add that the game seems to freeze at the ends of some of the briefings the same way that versions of OPL newer than 0.9.2 does. I have a save file on mission 7 and I can't progress because of freezing after the briefing and before the mission.